シャドーイング練習: Recent IELTS Listening Test 2026 | Construction Materials - 動画で英語スピーキングを学ぶ
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42 文
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You will hear part of a lecture about the use of different building materials.
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First, you have some time to look at questions 31 to 40.
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Thank you.
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Now listen carefully and answer questions 31 to 40.
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Good morning, everybody.
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Can you all hear me?
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Good.
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Well, today I'm going to be talking about construction materials, where they come from and what their properties are.
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First of all, then, what are the sources of the materials we use in construction?
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Well, many of them are manufactured.
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Plastic is one example.
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Others are natural.
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But even naturally occurring materials usually require processing before they can be used.
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Wood, for instance, is rarely used directly from trees.
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Instead, this natural material is first cut into required lengths and then seasoned to remove the excess moisture.
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The result is what we call timber.
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And then timber itself is often treated with preservatives before use, especially if it's going to be used on the outside of a building.
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In a similar way, stone needs to be cut to shape and may also be polished before being used for building.
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Of course, the more processing that's required, the more expensive the material becomes.
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What about selection?
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When we're deciding which kind of material to use, cost is not the only consideration.
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It's important to consider the effect on the environment, too.
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The problem is, large amounts of energy are used.
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For example, it takes huge amounts of energy to produce aluminium, and materials like timber need a lot of energy to transport because of their weight.
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Well, that's enough about sources.
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Let's move on to material properties, and let's first consider appearance.
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Now, there's a vast range of materials used in the building industry, and they vary tremendously in their appearance.
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Even for any single building material, appearance may vary greatly.
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For example, brick and stone come in a very wide range of colours, and can be smooth or very rough.
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And timber is especially interesting because the grain patterns on each piece, even from the same tree, are unique.
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But properties have to be described very accurately for construction purposes, and that usually involves the use of mathematical formulae.
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It isn't enough to say that a particular material is rough or strong or heavy.
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Words are subjective and they can be ambiguous so verbal descriptions alone aren't enough.
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Reflectance is a good example of this.
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Precise values for a range of building materials are available.
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Reflectance is a measure of the ability of a surface to reflect light, and a perfect reflector has a reflectance of one.
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A polished, mirror -like silver surface has a reflectance of very nearly one.
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A plaster surface, which has been painted brilliant white has a reflectance of around
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0 .8 quarry tiles have a reflectance of about 0 .1
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and black velvet has a reflectance of nearly zero well let's
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move on now to another very important property of materials that is the end of part four you now have one
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One minute to check your answers to part four.
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このレッスンの語彙とスピーキングのポイント
このスピーキングレッスンは、動画「Recent IELTS Listening Test 2026」を教材にしています。 繰り返し出てくる語は次のとおりです：material, reflectance, timber, example, properties。 この動画には、シャドーイング用の文が42文、単語が504語あります。 音声の長さは4:46です。 話す速さはゆっくりで、1分あたり約106語です。一つ一つの音をまねる余裕があります。 単語の84%は英語の頻出3,000語に含まれます。残りは練習の前に確認しておきましょう。
この動画の重要語彙
動画に出てくる覚えておきたい単語15語を、発音と意味つきで紹介します。
| 単語 | 発音 | 意味 |
|---|---|---|
| timber 名詞 | /ˈtɪmbɚ/ | 木材, 材木 |
| polish 動詞 | /ˈpɑ.lɪʃ/ | 磨く, 研ぐ |
| vast 形容詞 | /væst/ | 広大な, 莫大な |
| naturally 副詞 | /ˈnæt͡ʃ.(ə.)ɹə.li/ | 勿論 |
| mirror 名詞 | /ˈmiɹɚ/ | 鏡, 姿見 |
| occur 動詞 | /əˈkɜː/ | 起こる, 起る |
| carefully 副詞 | /ˈkɛɹf(ə)li/ | じっくり, 慎重に |
| formula 名詞 | /ˈfɔː.mjʊ.lə/ | 公式, 定式 |
| rarely 副詞 | /ˈɹɛəɹli/ | 滅多に…ない, 稀に |
| smooth 形容詞 | /smuːð/ | スムース |
| reflect 動詞 | /ɹɪˈflɛkt/ | 跳ね返す, 反射する |
| greatly 副詞 | /ˈɡɹeɪ̯t.li/ | 大いに |
| brick 名詞 | /ˈbɹɪk/ | 煉瓦 |
| grain 名詞 | /ɡɹeɪn/ | 穀物, 穀類 |
| lecture 名詞 | /ˈlɛk.t͡ʃə/ | 講義 |
注意したい発音
話し手はaren't, I'm, isn'tなど、短縮形や弱形を4回使っています。聞こえたとおりの短い形で発音しましょう。
- 「th」の音: smooth /smuːð/, mathematical /ˌmæθ(.ə)ˈmæt.ɪ.kəl/
- 「sh」と「zh」の音: polish /ˈpɑ.lɪʃ/, consideration /kənˌsɪd.əˈɹeɪ.ʃən/
- 長い単語（アクセントの位置に注意）: naturally /ˈnæt͡ʃ.(ə.)ɹə.li/, consideration /kənˌsɪd.əˈɹeɪ.ʃən/, mathematical /ˌmæθ(.ə)ˈmæt.ɪ.kəl/, accurately /ˈæk.jə.ɹɪt.li/, aluminium /ˌæl.(j)uˈmɪn.i.əm/
日本語話者が苦手な音：
- /r/ と /l/ の区別 — /l/ は舌先を歯茎につけ、/r/ はどこにもつけない: naturally /ˈnæt͡ʃ.(ə.)ɹə.li/, carefully /ˈkɛɹf(ə)li/, rarely /ˈɹɛəɹli/, reflect /ɹɪˈflɛkt/, greatly /ˈɡɹeɪ̯t.li/
- /v/ — /b/ にならないように、上の歯を下唇に当てる: vary /ˈvɛəɹi/, vast /væst/, involve /ɪnˈvɑlv/, verbal /ˈvɜː.bəl/, subjective /səbˈd͡ʒɛktɪv/
- /f/ — 「フ」ではなく、上の歯と下唇で出す: carefully /ˈkɛɹf(ə)li/, formula /ˈfɔː.mjʊ.lə/, reflect /ɹɪˈflɛkt/, reflector /ɹɪˈflɛktə(ɹ)/
この動画での練習方法
- まず声を出さずに動画を最後まで聞き、知らない単語をメモします。
- 通常の速度で一文ずつシャドーイングし、話し手のリズムに合うまで繰り返します。
- 自分の声を録音して元の音声と比べます。timber, polish, vastなどの単語に特に注意しましょう。
シャドーイングとは？英語上達に効果的な理由
シャドーイング（Shadowing）は、もともとプロの通訳者養成プログラムで開発された言語学習法で、多言語習得者として知られるDr. Alexander Arguelles によって広く普及されました。方法はシンプルですが非常に効果的：ネイティブスピーカーの英語を聞きながら、1〜2秒の遅延で声に出してすぐに繰り返す——まるで「影（shadow）」のように話者を追いかけます。文法ドリルや受動的なリスニングと異なり、シャドーイングは脳と口の筋肉が同時にリアルタイムで英語を処理・再現することを強制します。研究により、発音精度、抑揚、リズム、連音、リスニング力、そして会話の流暢さが大幅に向上することが確認されています。IELTSスピーキング対策や自然な英語コミュニケーションを目指す方に特におすすめです。